Finally, tap Pair New Controller and tap the name of the controller (left or right) that you want to pair. Follow the on-screen directions to complete the pairing process — you'll need to press the Oculus or menu button together with the Y button on the controller until the Oculus logo blinks and the controller vibrates.

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Sediment traps are a reliable method for studying plastic fluxes and their interactions with biogenic components. Although this approach requires specific platforms for deployment, planned ship time, and ship crews for deployment and recovery, because sediment traps are widely used tools in oceanographic research, they offer a combined opportunity to obtain more data on plastic fluxes and on particle distributions.

Usually, your Meta Quest 2 controllers should simply just work. There might be times, though, when one or both controllers aren't connecting to your headset. The good news is that there are a handful of things that might have gone wrong, and it's easy to troubleshoot:

Start the Meta Quest app on your mobile device and sign into your account. Then tap the Menu icon in the tabs at the bottom of the app and choose Devices. Tap Headset Settings and, in the list of headset settings options, choose Controllers.

Sediment trapdrainage

Galgani, L., H. Hepach, K.W. Becker, and A. Engel. 2023. Sediment traps: A renowned tool in oceanography applied to new marine pollutants. In Frontiers in Ocean Observing: Emerging Technologies for Understanding and Managing a Changing Ocean. E.S. Kappel, V. Cullen, M.J. Costello, L. Galgani, C. Gordó-Vilaseca, A. Govindarajan, S. Kouhi, C. Lavin, L. McCartin, J.D. Müller, B. Pirenne, T. Tanhua, Q. Zhao, and S. Zhao, eds, Oceanography 36(Supplement 1):52–53, https://doi.org/10.5670/oceanog.2023.s1.16.

Don't have access to your Meta Quest 2 in the mobile app on your iPhone or Android device? Unfortunately, it's not possible to pair your Oculus controllers to the headset without the mobile app. If that's your situation, contact Meta customer support. You might need to ship the headset and controllers to Meta for the repair.

The trap setup consisted of eight PVC cross-shaped arrays hooked to a main line to collect sinking material at depths of 50 m, 100 m, 150 m, 200 m, 300 m, 400 m, 500 m, and 600 m. Each array contained 12 tubular Particle Interceptor Traps (PITs; Figure 2), with an aspect ratio of 7.5 and a collection area of 0.0038 m2. The main line carried a ground weight and various floats as well as a yellow buoy at the top with two GPS beacons (Argos and Iridium), and a flashing light to allow continuous tracking and recovery of the traps at the end of the drift period (Figure 2).

Particles afloat in the ocean are important components of marine element cycles. Most of this particulate matter is suspended in the sunlit surface layer and is mainly composed of microscopic living and dead organisms and fecal pellets. Aggregation of small, suspended particles into large, rapidly sinking aggregates can transport surface-​derived material to the deep ocean and the seafloor, contributing to the so-called biological pump. The comprehensive analysis of these sinking particles has increased our understanding of important biogeochemical ocean processes, such as the relationship between the rate of primary production and downward flux of particulate organic matter, the biological control of the removal of abiogenic particles from the surface ocean, and seasonal or inter­annual variations in downward particle fluxes. Sediment traps have been widely used since the late 1970s to capture the downward flux of particles for study (e.g., Staresinic et al., 1978; Knauer et al., 1979).

Sediment trapdesign example

More recently, we deployed a similar setup in the southwestern Baltic Sea as part of the Boknis Eck Marine Time Series Station in Eckernförde Bay (Germany) (Figure 3; for more information, see https://www.bokniseck.de/). The sediment trap array is moored in a restricted area close to the time-series station, where the water depth is about 17 m (Figure 1). Sinking material is collected at about 5 m and 9 m depth. The whole system is moored with a ~600 kg weight. Each array contains four PITs with one lid-sealed PIT per array providing a blank. The sediment traps are exchanged every one to two months. Surface water samples are obtained by filtering ~2 L of the brine solution onto 300 µm, 125 µm, 50 µm, and 1 mm sieves.

The Meta Quest 2 VR headset comes with a pair of controllers that you can use to interact with the virtual environment and play most games.

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Geomar Helmholtz Center for Ocean Research Kiel, Germany, and Harbor Branch Oceanographic Institute of Florida Atlantic University, USA

Geomar Helmholtz Center for Ocean Research Kiel, Germany, and Harbor Branch Oceanographic Institute of Florida Atlantic University, USA

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If you buy a new Meta Quest 2 headset, the controllers that come in the box are automatically paired. But if you ever need to replace a controller, you may need to pair it to get your headset to recognize it. To do that, make sure the controller has batteries installed and your headset is charged and turned on.

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PIT preparation and sample recovery followed Engel et al. (2017). The traps were left to drift in the water for four to five days to ensure collection of sufficient material for later analysis. After recovery, the collected material was pre-screened (500 µm) to remove swimmers and visible plastic particles for later identification, and the remaining material was then split into aliquots for different analyses.

Sediment trapconstruction

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The fate of marine plastic is little understood. Flux estimates of plastic input into the ocean and actual concentrations observed suggest an unidentified sink. The interaction of plastic with sinking biological material in the ocean might explain a large fraction of the missing plastic mass inventory (van Sebille et al., 2020).

5. After the controller has been removed from your system, tap Pair New Controller and tap the name of the controller (left or right) that you want to pair.

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Plastic is transported both horizontally and vertically in the ocean. To look for the missing plastic, we deployed multi-level, surface-tethered drifting sediment traps in the summer of 2019 during a cruise to the North Atlantic Gyre, one of the hotspots of plastic debris accumulation (Galgani et al., 2022; Figure 1). Surface-tethered sediment traps can drift along the paths of ocean currents and enable identification of areas of high plastic concentration.

Temporarysediment trap

This is an open access article made available under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/), which permits use, sharing, adaptation, distribution, and reproduction in any medium or format as long as users cite the materials appropriately, provide a link to the Creative Commons license, and indicate the changes that were made to the original content. Images, animations, videos, or other third-party material used in articles are included in the Creative Commons license unless indicated otherwise in a credit line to the material. If the material is not included in the article’s Creative Commons license, users will need to obtain permission directly from the license holder to reproduce the material.

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Sediment trapdetail

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While the controllers are the primary way to interact with games and apps inside VR, you can sometimes also go hands-free. The Quest has somewhat sophisticated and reliable hand tracking, which lets you use your hands to interact with the virtual universe with gestures like pinching and grabbing.

In contrast to the surface-tethered drifting array, which permits estimations of downward particle fluxes in open waters, the year-round coastal array serves as an in situ particle collector that allows us to study how plastic particles correlate with organic particle abundance over seasonal cycles. This long-term monitoring strategy will enable us to track changes in the marine ecosystem and in plastic concentrations, and will potentially provide information on plastic interaction with biogeochemical and physical processes that drive long-term ecosystem changes.

If your controllers are not working — and you've tried replacing the batteries or restarting the headset — then you might need to reset your controller. In other words, you need to use the mobile app to unpair the controller and then repair it.

Controller-free hand tracking doesn't work in every game, though, so most of the time you'll probably rely on the controllers.

Sediment trap equipment, including that used for our studies, is usually made from plastics. Therefore, each array (for every depth and every deployment) contains at least one or two PITs serving as blank controls. These PITs are filled with filtered brine and filtered seawater but sealed immediately before deployment, allowing us to account for any potential source of contamination from the system itself at any step of the process. The blanks are successively pooled and treated like the regular samples. As an additional measure, we take particular care to work in 100% cotton clothes while preparing the setup and handling the samples, and we use all glass materials when possible. Moreover, a laboratory blank control is always run to account for possible contamination in the lab during the analysis.

While helping us to understand how fast “natural” elements such as carbon and nutrients (i.e., nitrogen, phosphorus, and iron) are exported from the surface to the deep ocean on various timescales, sediment traps can also provide important information on fluxes and removal rates of anthropogenic pollutants such as plastic particles. Although plastic is very resistant to (bio-)degradation and can remain in the marine environment for hundreds of years, physical, chemical, and biological stressors break down larger plastic debris into micro- and nanoplastics that threaten marine life.

Sediment trapdesign

6. Follow the on-screen directions to complete the pairing process – you'll need to press the Oculus or menu button together with the Y buttons on the controller until the Oculus logo blinks and the controller vibrates.

The Quest 2 controllers are a slightly refined update to the original Quest controllers, which feature separate grip and trigger buttons, three face buttons and a joystick. They're powered by a pair of AA batteries (with a dramatically longer battery life than the first-generation controllers).

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